A sensor fixing device for engineering geological monitoring

Abstract

The utility model discloses a sensor fixing device for engineering geology monitoring, including sensor body, the bottom fixed mounting of sensor body has the anchor rod body, the inside of anchor rod body is provided with steady component, anchor rod body and steady component cooperation effect, form three -dimensional anchoring network when embedding the sensor into rock layer, to improve the shear resistance and the pullout force of obviously, ensure the long -term stability of monitoring data, steady component is provided with grouting pipeline, filter, flow -equalizing chamber shell and hollow anchoring pipe, through the communication cooperation of grouting pipeline and filter, make concrete slurry can pass through the screening effect of filter, the impurity in slurry is blocked, avoids the subsequent passage after the blockage, after the flow of slurry into flow -equalizing chamber shell through the adapter pipe, through its internal cavity structure to the flow rate and pressure and equal distribution, again through the tip one -way valve of hollow anchoring pipe and injects the rock layer gap.

Description

Technical Field

[0001] This utility model belongs to the field of engineering survey technology, and in particular relates to a sensor fixing device for engineering geological monitoring. Background Technology

[0002] Traditional sensor mounting methods have several problems. Simple anchor bolt fixing relies solely on the friction between the anchor bolt and the rock strata for stability. However, in complex geological conditions, such as soft or fractured rock formations, this method is prone to loosening, leading to sensor displacement and affecting the accuracy and continuity of monitoring data. Moreover, single anchor bolt fixing methods are insufficient to meet the diverse needs of different geological environments, and their stability cannot be effectively guaranteed for engineering projects requiring long-term monitoring.

[0003] Existing grouting methods often suffer from uneven grout distribution during the grouting process. Ordinary grouting pipes directly inject the grout, which cannot guarantee that the grout will fully fill the various fissures in the rock strata, significantly reducing the anchoring effect. Simultaneously, impurities can easily enter the pipes during grouting, causing blockages, affecting the grouting process, and even leading to anchoring failure. Furthermore, when encountering unstable pressure, the grout may backflow, which will also adversely affect the anchoring quality. These problems severely restrict the efficient implementation of engineering geological monitoring and the reliability of monitoring results.

[0004] Existing technologies have the following drawbacks: traditional devices mostly rely on a single mechanical anchoring structure and lack the function of actively grouting to fill the gaps in the rock strata, which makes the sensors susceptible to displacement due to geological activity. They usually adopt a pre-fixed structure, which cannot dynamically adjust the anchoring angle and depth according to the on-site rock strata conditions. They require external equipment for positioning and calibration, which increases the complexity of construction. Utility Model Content

[0005] This invention provides a sensor fixing device for engineering geological monitoring, which can solve the problems existing in the prior art.

[0006] To solve the above problems, the technical solution provided by this utility model is as follows:

[0007] This utility model embodiment provides a sensor fixing device for engineering geological monitoring, including a sensor body (1), an anchor body (2) is fixedly installed at the bottom of the sensor body (1), and a stabilizing component (3) is provided inside the anchor body (2);

[0008] The stabilizing component (3) includes a bearing ring (307), a positioning frame (308), a filter (309), a connecting pipe (310), a flow equalization chamber housing (311), a hollow anchoring pipe (312), and a limiting plate (313). The bearing ring (307) is fixedly installed inside the anchor body (1), and the positioning frame (308) is fixedly installed inside the anchor body (2) and located on top of the bearing ring (307). A filter (309) is fixedly installed on the top of the anchor rod body (2). The bottom of the filter (309) is connected to a connecting pipe (310). The bottom of the connecting pipe (310) is connected to a flow equalization chamber shell (311). One side of the flow equalization chamber shell (311) is connected to the hollow anchor pipe (312). The hollow anchor pipe (312) is movably sleeved on one side of the limiting plate (313). The limiting plate (313) is fixedly installed on one side of the anchor rod body (2).

[0009] The stabilizing component (3) further includes a positioning plate (301), an external threaded ring (302), a cross-shaped torsion block (303), an external hexagonal knob (304), a grouting pipe (305), a lead screw (306), an internal threaded block (314), a protrusion (315), and a roller (316). The external threaded ring (302) is threaded onto the bottom of the sensor body (1). The positioning plate (301) is fixedly connected to the bottom of the external threaded ring (302). The cross-shaped torsion block (303) is fixedly connected to the top of the positioning plate (301). An external hexagonal knob is movably mounted on the top of the positioning plate (301). Angle knob (304), a grouting pipe (305) is provided on one side of the external hexagonal knob (304), a screw rod (306) is fixedly connected to the bottom of the external hexagonal knob (304), an internal thread block (314) is threadedly sleeved at the bottom of the screw rod (306), a protrusion (315) is fixedly connected to one side of the internal thread block (314), a roller (316) is movably installed on one side of the protrusion (315), the side of the protrusion (315) near the flow equalization cavity shell (311) is an arc edge, and the roller (316) is movably connected to one side of the flow equalization cavity shell (311).

[0010] In a preferred embodiment of this utility model, the grouting pipe (305) is used to transport concrete slurry to the interior of the filter (309), and the slurry passes through the grouting pipe (305), the filter (309), the flow equalization chamber shell (311) and the hollow anchor pipe (312) in sequence before being injected into the rock strata gaps around the anchor body (2).

[0011] In a preferred embodiment of this utility model, the hollow anchor tube (312) has a pointed end on the side near the outer layer of the anchor rod body (2), and a one-way valve is provided inside the pointed end.

[0012] In a preferred embodiment of this utility model, the contact surface between the arc-shaped edge of the protrusion (315) and the roller (316) is a smooth curved surface, which is used to reduce frictional resistance.

[0013] In a preferred embodiment of this utility model, there are multiple limiting plates (313) that are evenly distributed along the circumference of the anchor body (2), and each limiting plate (313) has a guide groove in the middle for guiding the hollow anchor tube (312) to slide.

[0014] In a preferred embodiment of this utility model, the cross-shaped torsion block (303) and the external hexagonal knob (304) are coaxially arranged and linked by a snap-fit ​​structure to synchronously control the rotation of the lead screw (306).

[0015] In a preferred embodiment of this utility model, a buffer pad is provided between the bearing ring (307) and the positioning frame (308), and an anti-clogging filter screen is embedded in the wall of the adapter pipe (310).

[0016] Based on the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solution to be protected by this utility model are as follows:

[0017] (1) This utility model, by setting up components such as grouting pipes, filters, flow equalization chamber shells, and hollow anchoring pipes, allows the concrete grout to pass through the sieving action of the filter, blocking impurities in the grout and preventing blockage of subsequent channels. After the grout flows into the flow equalization chamber shell through the transfer pipe, the flow rate and pressure are evenly distributed through its internal cavity structure, and then injected into the rock strata fissures through the one-way valve at the tip of the hollow anchoring pipe. Because the guide groove of the limiting plate forms a circumferential constraint on the hollow anchoring pipe, it ensures the accuracy of the grouting direction, thereby achieving the effect that the fixing device of this utility model can fill and reinforce the soft rock strata around the anchor body through a controllable grouting process, improving the pull-out resistance of the sensor fixing structure.

[0018] (2) This utility model, by setting up components such as an external threaded ring, a lead screw, an internal threaded block, a protrusion, and a roller, achieves a synchronous transmission of rotational operation to the lead screw through the threaded connection between the external threaded ring and the sensor body, and the interlocking linkage between the cross-shaped torsion block and the external hexagonal knob. This drives the internal threaded block to move along the lead screw axis. The internal threaded block drives the protrusion to move, and through the contact between the arc-shaped edge of the protrusion and the smooth curved surface of the roller, the linear motion is converted into a circumferential clamping force on the outer shell of the flow equalization cavity. Since the roller can rotate freely, mechanical friction is reduced. Combined with the rotational support of the flow equalization cavity by the bearing ring, the fixing device of this utility model can dynamically adjust the anchoring angle and fitting tightness of the hollow anchoring tube through the mechanical linkage structure, adapting to the stability requirements of different rock strata structures and enhancing the stability of sensor installation. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a slanted view of the structure of a sensor fixing device for engineering geological monitoring provided in an embodiment of this application.

[0021] Figure 2 This is a partial structural schematic diagram of a sensor fixing device for engineering geological monitoring provided in an embodiment of this application.

[0022] Figure 3 This is a partial structural diagram of a stabilizing component provided in an embodiment of this application.

[0023] Figure 4 This is a partial structural installation diagram of a stabilizing component provided in an embodiment of this application. Detailed Implementation

[0024] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The terms "upper," "lower," "front," "rear," "left," and "right," etc., used when describing the installation position or direction of the structure or components in this embodiment are based on the orientation shown in the accompanying drawings. They are merely for convenience of description, used to distinguish the relative positions of various components or directions, and do not represent the orientation of the device or functional component in this embodiment during use.

[0025] like Figure 1 As shown in the figure, this utility model provides a sensor fixing device for engineering geological monitoring, including a sensor body 1, an anchor body 2 fixedly installed at the bottom of the sensor body 1, and a stabilizing component 3 disposed inside the anchor body 2. The anchor body 2 and the stabilizing component 3 work together to form a three-dimensional anchoring network when the sensor is embedded in the rock strata, so as to significantly improve the shear resistance and pull-out resistance, and ensure the long-term stability of the monitoring data.

[0026] like Figure 2 , Figure 3 and Figure 4As shown, the stabilizing component 3 includes a bearing ring 307, a positioning frame 308, a filter 309, a transfer pipe 310, a flow equalization chamber housing 311, a hollow anchoring pipe 312, and a limiting plate 313. The bearing ring 307 is fixedly installed inside the anchor bolt body 2. The positioning frame 308 is fixedly installed inside the anchor bolt body 2 and located on top of the bearing ring 307. The filter 309 is fixedly installed on the top of the positioning frame 308. The bottom of the filter 309 is connected to the transfer pipe 310. The bottom of the transfer pipe 310 is connected to the flow equalization chamber housing 311. One side of the flow equalization chamber housing 311 is connected to the hollow anchoring pipe 312. The hollow anchoring pipe 312 is movably sleeved on one side of the limiting plate 313. The limiting plate 313 is fixedly installed on one side of the anchor bolt body 2.

[0027] The stabilizing component 3 also includes a positioning disc 301, an external threaded ring 302, a cross-shaped torsion block 303, an external hexagonal knob 304, a grouting pipe 305, a lead screw 306, an internal threaded block 314, a protrusion 315, and a roller 316. The external threaded ring 302 is threadedly fitted onto the bottom of the sensor body 1. The positioning disc 301 is fixedly connected to the bottom of the external threaded ring 302. The cross-shaped torsion block 303 is fixedly connected to the top of the positioning disc 301. An external hexagonal knob 304 is movably mounted on the top of the positioning disc 301. 4. A grouting pipe 305 is provided on one side of the external hexagonal knob 304. A threaded rod 306 is fixedly connected to the bottom of the external hexagonal knob 304. An internal threaded block 314 is threaded onto the bottom of the threaded rod 306. A protrusion 315 is fixedly connected to one side of each internal threaded block 314. A roller 316 is movably installed on one side of the protrusion 315. The side of the protrusion 315 near the flow equalization chamber shell 311 has an arc-shaped edge, wider at the bottom and narrower at the top. The roller 316 is movably connected to one side of the flow equalization chamber shell 311. The grouting pipe 305 is used to transport concrete grout to the inside of the filter 309. The grout passes through the grouting pipe 305, the filter 309, the flow equalization chamber shell 311, and the hollow anchor pipe 312 in sequence before being injected into the rock strata fissures around the anchor body 2.

[0028] This embodiment employs a multi-stage grout distribution design. Impurities are intercepted by filter 309, and the transfer pipe 310 guides the grout to diffuse evenly, avoiding localized blockages and ensuring the efficiency and reliability of the grouting process. The expansion design of the flow equalization cavity shell 311 balances the grout flow rate, and combined with multi-point injection from the hollow anchoring pipe 312, it achieves full filling of rock fissures, enhancing the overall strength of the three-dimensional anchoring network.

[0029] The hollow anchor tube 312 has a pointed end near the outer layer of the anchor body 2, and a one-way valve is installed inside the pointed end. Multiple limiting plates 313 are evenly distributed along the circumference of the anchor body 2, and each limiting plate 313 has a guide groove in its center to guide the sliding of the hollow anchor tube 312. The one-way valve controls the unidirectional injection of grout into the rock fissures, while the guide grooves of the limiting plates 313 precisely constrain the extension direction of the anchor tube, enhancing the interlocking strength between the hollow anchor tube 312 and the rock mass, adapting to complex geological conditions. Through the synergistic effect of multi-directional limiting and guiding, the hollow anchor tube 312 is prevented from deflecting or getting stuck, ensuring that the grouting path matches the rock fissures and maximizing the grout consolidation effect.

[0030] The contact surface between the arc-shaped edge of the protrusion 315 and the roller 316 is a smooth curved surface to reduce frictional resistance. By optimizing the friction coefficient of the contact surface, the energy loss during the drive of the lead screw 306 is reduced, ensuring the smoothness of the extension and retraction of the hollow anchor tube 312 by the protrusion 315 and improving the adjustment accuracy.

[0031] The cross-shaped torsion block 303 and the external hexagonal knob 304 are coaxially arranged and linked by a snap-fit ​​structure to synchronously control the rotation of the lead screw 306, realizing dual-mode operation of manual rapid installation and mechanical fine adjustment. This not only meets the needs of efficient field construction, but also accurately controls the insertion depth of the anchor pipe and the grout pressure.

[0032] A buffer pad is provided between the bearing ring 307 and the positioning frame 308. The pipe wall of the adapter pipe 310 is embedded with an anti-clogging filter screen to buffer the impact of grouting pressure and reduce component wear. At the same time, the anti-clogging filter screen further ensures the purity of the grout and extends the service life of the filter and the pipe.

[0033] Further explanation is needed: The stabilizing component 3 is the core component of the sensor fixing structure, mainly used to enhance the mechanical anchoring force between the anchor rod and the rock stratum and optimize the grouting consolidation effect. Its overall design achieves stable fixing of the sensor in complex geological environments through the synergistic effect of multi-level structures. The bearing ring 307 and the positioning frame 308 constitute the basic support frame. The bearing ring 307 can buffer the impact of rock stratum stress changes on the sensor, while the positioning frame 308 provides a precise installation benchmark for the grouting system. The filter 309 and the transfer pipe 310 form a grout pretreatment unit, which can filter impurities and guide the grout flow to the flow equalization cavity shell 311 to ensure uniform distribution of grouting material. The flow equalization cavity shell 311 adopts a ring structure design, which can convert pressurized fluid into circumferentially uniformly distributed seepage. Combined with the tip one-way valve structure of the hollow anchoring pipe 312, the grout can be directionally injected into the rock stratum fissures and form an anchor body.

[0034] The mechanical adjustment system consists of a positioning disc 301, a lead screw 306, and an internal thread block 314. Through the linkage design of the external hexagonal knob 304 and the cross-shaped torsion block 303, the rotation of the lead screw 306 can be controlled synchronously. When the lead screw 306 drives the internal thread block 314 to move axially, the protrusions 315 on both sides push the hollow anchor tube 312 to expand radially through the rollers 316, realizing the tight engagement between the anchor body and the rock stratum. The protrusions 315 adopt an arc-shaped structure design with a wide bottom and a narrow top, which can generate a large expansion force in a limited space. With the guide groove structure of the limiting plate 313, it ensures that the hollow anchor tube 312 maintains radial uniform force during the expansion process. Through the dual action of mechanical expansion and grouting consolidation, this component significantly improves the pull-out resistance of the anchor in the fractured rock stratum. At the same time, the anti-clogging filter and one-way valve design effectively avoid the pipe blockage and grout backflow problems that may occur during the grouting process, ensuring the long-term reliability of the system.

[0035] The implementation principle of the sensor fixing device for engineering geological monitoring in this embodiment of the utility model is as follows:

[0036] First, the anchor body 2 is vertically inserted into the pre-drilled geological monitoring hole. By rotating the external threaded ring 302, the positioning plate 301 is brought into contact with the rock surface to form a mechanical support base. At this time, the snap-fit ​​structure between the cross torsion block 303 and the external hexagonal knob 304 keeps the screw rod 306 in the initial locked state, ensuring that the hollow anchor tube 312 is in a retracted state.

[0037] Secondly, by rotating the external hexagonal knob 304, the linkage screw 306 drives the internal thread block 314 downward, simultaneously opening the grouting pipe 305. After the concrete slurry is filtered by the filter 309 to remove impurities, it is injected into the uniform flow chamber shell 311 through the transfer pipe 310, forming a circumferentially uniformly distributed pressure fluid in the annular cavity.

[0038] Next, after the grout fills the flow equalization chamber, continue to rotate the hexagonal knob 304 to drive the protrusion 315 to push the hollow anchoring tube 312 outwards via the roller 316. The one-way valve structure at its tip opens under hydraulic action, and the high-pressure grout is injected into the rock fissures through the hollow tube. At the same time, the arc-shaped edge design of the protrusion 315 ensures that the expansion force is evenly transmitted radially, and the guide groove of the limiting plate 313 ensures that the anchoring tube remains stable during the expansion process.

[0039] Next, as the grouting pressure increases, the grout penetrates and diffuses in the rock fissures and gradually solidifies to form a cement stone body. At the same time, the mechanically expanded hollow anchor pipe 312 forms a toothed interlocking structure with the solidified body. The dual effect significantly improves the pull-out resistance, while the anti-clogging filter and one-way valve effectively prevent grout backflow and pipe blockage.

[0040] Finally, the sensor body 1 is flexibly connected to the anchor body through the bearing ring 307, which can buffer the stress generated by rock creep. The positioning frame 308 acts as a reference to ensure the accuracy of monitoring data. The entire structure maintains long-term stable monitoring performance in complex geological environments through the synergistic effect of the grouting body and mechanical anchors.

[0041] In summary, although the present invention has been disclosed above with reference to preferred embodiments, the above preferred embodiments are not intended to limit the present invention. Those skilled in the art can make various changes, modifications and substitutions without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope defined in the claims.

Claims

1. A sensor fixing device for engineering geological monitoring, characterized in that, Includes a sensor body (1), an anchor body (2) is fixedly installed at the bottom of the sensor body (1), and a stabilizing component (3) is provided inside the anchor body (2); The stabilizing component (3) includes a bearing ring (307), a positioning frame (308), a filter (309), a connecting pipe (310), a flow equalization chamber housing (311), a hollow anchoring pipe (312), and a limiting plate (313). The bearing ring (307) is fixedly installed inside the anchor body (2), and the positioning frame (308) is fixedly installed inside the anchor body (2) and located on top of the bearing ring (307). A filter (309) is fixedly installed on the top of the anchor rod body (2). The bottom of the filter (309) is connected to a connecting pipe (310). The bottom of the connecting pipe (310) is connected to a flow equalization chamber shell (311). One side of the flow equalization chamber shell (311) is connected to the hollow anchor pipe (312). The hollow anchor pipe (312) is movably sleeved on one side of the limiting plate (313). The limiting plate (313) is fixedly installed on one side of the anchor rod body (2). The stabilizing component (3) further includes a positioning plate (301), an external threaded ring (302), a cross-shaped torsion block (303), an external hexagonal knob (304), a grouting pipe (305), a lead screw (306), an internal threaded block (314), a protrusion (315), and a roller (316). The external threaded ring (302) is threaded onto the bottom of the sensor body (1). The positioning plate (301) is fixedly connected to the bottom of the external threaded ring (302). The cross-shaped torsion block (303) is fixedly connected to the top of the positioning plate (301). An external hexagonal knob is movably mounted on the top of the positioning plate (301). Angle knob (304), a grouting pipe (305) is provided on one side of the external hexagonal knob (304), a screw rod (306) is fixedly connected to the bottom of the external hexagonal knob (304), an internal thread block (314) is threadedly sleeved at the bottom of the screw rod (306), a protrusion (315) is fixedly connected to one side of the internal thread block (314), a roller (316) is movably installed on one side of the protrusion (315), the side of the protrusion (315) near the flow equalization cavity shell (311) is an arc edge, and the roller (316) is movably connected to one side of the flow equalization cavity shell (311).

2. The sensor fixing device for engineering geological monitoring according to claim 1, characterized in that, The grouting pipe (305) is used to transport concrete grout to the interior of the filter (309), and the grout passes through the grouting pipe (305), the filter (309), the flow equalization chamber shell (311) and the hollow anchor pipe (312) in sequence before being injected into the rock strata gaps around the anchor body (2).

3. The sensor fixing device for engineering geological monitoring according to claim 1, characterized in that, The hollow anchor tube (312) has a pointed end on the side near the outer layer of the anchor body (2), and a one-way valve is installed inside the pointed end.

4. The sensor fixing device for engineering geological monitoring according to claim 1, characterized in that, The contact surface between the arc-shaped edge of the protrusion (315) and the roller (316) is a smooth curved surface, which is used to reduce frictional resistance.

5. The sensor fixing device for engineering geological monitoring according to claim 1, characterized in that, The number of limiting plates (313) is multiple, and they are evenly distributed along the circumference of the anchor body (2). Each limiting plate (313) has a guide groove in the middle for guiding the hollow anchor tube (312) to slide.

6. The sensor fixing device for engineering geological monitoring according to claim 1, characterized in that, The cross-shaped torsion block (303) and the external hexagonal knob (304) are coaxially arranged and linked by a snap-fit ​​structure to synchronously control the rotation of the lead screw (306).

7. A sensor fixing device for engineering geological monitoring according to claim 1, characterized in that, A buffer pad is provided between the bearing ring (307) and the positioning frame (308), and an anti-clogging filter screen is embedded in the wall of the adapter pipe (310).

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